MEMC Shares Tumble 54%
As Loss Widened in Quarter

ST. LOUIS -- Shares of MEMC Electronic Materials Inc. fell 54% Friday after the silicon-wafer company posted a steeper loss for its second quarter.

MEMC also said cash generated from operations, combined with the liquidity provided by existing cash balances and credit facilities, will be sufficient to satisfy commitments only through the third quarter. Those commitments include capital expenditures, repayment of current maturities of...